[nsajko]

> frustration was expressed with Geogebra where missing a parenthesis forced you to re-type the entire equation since it often assumed the bulk of your equation was a parameter, and there was no way to correct it.

I believe this may simply be a case of not knowing Geogebra well, or it's simply caused by differences in taste/being accustomed to a single user interface. In my experience, Geogebra offers the ability to edit the source of any object after selecting its settings. So it was just two clicks away.

This is Geogebra the Electron app, though, I think there's also a Web app and I think there was also a Java app some time before.